		body,
		div,
		span {
			margin: 0;
			padding: 0;
		}
		/*头部*/	
		.header {
			height: 50px;
			font-weight: bold;
			text-align: center;
			line-height: 50px;
			vertical-align: middle;
			margin: 20px 20px 0 20px;
		}
		
		.article {
			min-width: 810px;
			min-height: 600px;
			overflow: hidden;
			padding: 0 30px;
			line-height: 25px;
		}
		
		p {
			text-indent: 2em;
		}
		/*左边*/
		
		.article .left {
			float: left;
			width: 200px;
			margin-left: -100%;
			padding-bottom: 9999px;
			margin-bottom: -9999px;
		}
		/*右边*/
		
		.article .right {
			float: left;
			width: 200px;
			margin-left: -200px;
			padding-bottom: 9999px;
			margin-bottom: -9999px;
		}
		/*中间*/
		
		.article .mid {
			float: left;
			width: 100%;
			padding-bottom: 9999px;
			margin-bottom: -9999px;
		}
		
		.inner {
			margin: 0 200px;
			padding: 0 30px 30px 30px;
		}